Amazing Gianni Bini

I found this amazing Gianni Bini dress at a resale shop for only $14.

I'm so excited it's so adorable and it's incredibly well made.

It has ruffles on the sleeves and bottom of the dress which just adds to the simple shape of the shift.
I don't really know anything about when it was made or what it sold for originally so, if anyone does know about this dress please let me know I would love to have some info on it.
Thanks!